Beater engine



W. V. KNOLL BEATER ENGINE July 14, 1931.

Filed Aug. 6, 1928 2 Sheets-Sheet l Jui 14, 1931.

W. V. KNOLL EEEEEEEEEE NE Filed Aug. 6, 1928 2 Sheets-Sheet 2 @IEICQ] Patented July 14, 1931 UNITED STATES PATENT? OFFICE WILLIAM V. KNOLL, OF DAYTON, OHIO, ASSIGNOR TO MIDWEST-FULTON MACHINE CO,

OF DAYTON, OHIO, A CORPORATION OF OHIO IBEATER ENGINE Application filed August 6, 1928. Serial No. 297,841.

My invention relates to pulp making, and

fiber liberation, and more particularly to av system of beater engines, and means for progressively transferring from one beater engine to another'pulp portions which have been reduced to required conditions.

In the present construction a number of beater engines, preferably though not necessarily, of the Hollander type are arranged in series and interconnected by conduits through which the finished product discharged from one beater engine is conveyed to another for reworking. Each beater engine is equipped with a deflector plate adjustably positioned above the usual backfall' at the rear side of the beater roll. Such beater engines are further provided with receiving pans leading to the offtake conduit, which receiving ans are located slightly below the top of the periphery of the roll and at the forward side thereof. In operation the coarse and uncompleted portions of the pulp passing the roll are delivered over the backfall and beneath the deflector plate to continue their circuitous path in the beater engine for reworking. The lighter and finished particles of pulp are carried upwardly by the action of the roll and are discharged forwardly from the top of the roll by centrifugal influence into the receiving pan from which such pulp portion is conducted to the succeeding beater en ine of the series. Means is provided for adjusting the deflector plate to permit a greater or less volume of the pulp to be passed between the backfall" and such plate to continue its flow throu h the beater engine. This adjustment 0 the plate regulates the quantity and to some extent the character of the pulp to be discharged from the engine and afi'ords, in effect, a selective volume control by which the pulp in the successive beaters of the series may be maintained at a constant level.

The object of the invention is .to simplify the construction, as well as the-means and mode of operation, of beater engines, whereby they will not only be chea ened in construction, but will be more e cient in use, positive in operation, uniform in action,

A further object of the invention is to provide a selective volume control for beater engines by which the quantity of pulp discharged may be accurately regulated.

' A further object of the invention is to provide an adjustable deflector plate in cooperative relation with the beater fell and backfall of a beater engine, and to provide;

means for adjusting such deflector plate from the front of the engine.

A further and important object of the invention is to provide improved means for trapping the refined and finished portions of the pulp, and for conveying the same from the beater engine.

With the above primary and other incidental objects in view, as will more fully appear in the specification, the invention consists ofthe-features of construction, the parts and combinations thereof, and the mode of operation, or their equivalents, as hereinafter described and set forth in the claims.

Referring to the accompanying drawings, wherein is shown the preferred, but obviously not necessarily, the only form of embodiment of the invention Fig. 1 is a top plan view of a heater engine to which the present invention has been a plied. Fig. 2 is a side elevation thereof. ig. 3 is a top plan view illustrating the interconnection of a series of beater engines for a progressive treatment of the pulp. Fig. 4 is an end elevation of the beater installation shown in Fig. 3. Fig. 5 is a detail of the deflector plate mounting and its actuating means.

Like parts are indicated by similar characters of reference throughout the several views.

Referring to the drawings, 1 is the vat or tub of the beater, in which is mounted the roll or drum 2 coacting with the usual bed plate 3, and discharging the beaten pulp over the backfall 4. A portion of the vat or tub 1 is provided with a cover or hood 5 beyond the beater roll 2. This is the usual construction of a Hollander type beater, and forms no part, per se, of the present invention.

Located rearwardly of the beater roll 2 and extending into channel spaced relation with the backfall 4 is a vertically adjustable deflector plate 6. This plate is slidingly mounted in guides or ways? upon supporting brackets located at opposite sides of the hood 8 enclosing the upper portion ofthe beater roll. Mounted in such brackets at opposite sides of the beater roll hood is a transverse shaft 9 carrying gear pinions 10 intermeshing with rack bars 11 uponthe forward and under side of the inclined deflector plate. The shaft 9 is rotated to slidingly adjust the deflector plate dry means of a worm and worm gear 12 actuated by a shaft 13 carrying at its forward end adjacent to the vat or tub I a hand wheel 14. By rotating the hand wheel 14 the shaft 9 is in turn rotated to thereby raise and lower the deflector plate, varying the outlet orifice 15 for pulp intermediate the backfall 4 and the lower margin of the plate 6.

The opening in the cover section through which the deflector plate projects is sealed at one side of the plate by a strip of packing material 16 clamped between a clamp bar 17 connected by stud bolts 18 with an extension 19 of the vat or tub cover 5. At the opposite side of the adjustable plate there is provided a packing strip of hemp or other suitable material held between transverse bars 21 which may be secured to the beater roll hood 8 but which in practice merely rest thereon loosely, and hold the packing material 20 in contact with the adjustable plate by gravity, due to the curvature or inclination of the beater roll hood.

At its forward end the beater roll hood 8 communicates with a covered receiving compartment or pan 23, which extends the full width of the beater roll 2 and is inclined downwardly and forwardly from av level slightly below the top of the periphery of such roll. The pulp receiving compartment or pan 23 is contracted laterally through a discharge outlet 24, preferably provided with a gate or cutoff valve from which outlet leads a conduit 25 to the next succeeding beater engine of the series. The receiving compartment 23 and interconnecting conduits 25 between succeeding beater engines are preferabl inclined at such degree as to induce a ow of the selected or separated pulp by gravity from one beater engine to the other. It will be understood, however, that screw conveyors or other pulp of the deflector In the normal operation of a beater en- I gine, the heavier portions of the pulp are lmpelled over the backfall 4 by the rotation of the wheel in a constantly flowing'stream which continues its way about the midfeather of the tub or vat, returning to the roll for reworking. At the same time the more finely reduced portions of the pulp are discharged from the wheel by centrifugal influence through paths of higher traectory, depending upon the relative size and weight of the pulp particles. Such finely divided portions are thus carried above the normal flowing pulp stream and are ordinarily projected into space. In the present construction, the adjustable deflector plate 6 is arranged to intercept a greater or less proportion of the reduced pulp thus discharged by .centrifugal influence above the level of the pulp stream, permitting only a limited portion thereof of the heavier or coarser particles having a low trajectory to pass through the opening 15 intermediate the backfall 4 and the lower margin of the deflector plate.

The more finely divided portions of the pulp are carried upwardly by the rotation of the roll, and discharged forwardly from the top thereof by centrifugal influence into the receiving compartment or pan 23. By varying the elevation of the deflector plate 6 in its relation to the top of the backfall, a greater or less quantity of refined pulp is caused to thus pass over the top of the revolving roll and into the receiving compart- 'ment. The apparatus thus automatically selects or separates the refined pulp from the unrefined or coarse portions, the degree of fineness being regulated by the adjustment plate. The adjustment of this plate 6 thus affords a selective volume control as well as a grading selector for the seplarationof the refined from the coarse pu p. I

The interconnection of the plurality of beater engines in series by means of the interconnecting pulp conduits 25 afford a continuous flow system in which, as rapidly as the pulp is conditioned in one engine, it is discharged therefrom and conveyed to the next beater engine of the series for further treatment,- while. the coarse material is retained in the beater engine and returned to the roll for reworking. By adjusting the deflector plates of different beater engines proportionately to the output thereof, the pulp level in the succeeding beaters of the series may be maintained substantially constant.

A door 26 is provided in the top of the beater roll hood to permit inspection of the roll or removal of any refuse material. Likewise the receiving compartment or pan 23 is provided in one side thereof with an access opening provided with a closure 27 to permit the observation of the flow of selected pulp.

Having thus described by invention, I claim: a

1. In a beater engine, or the like, the combination with a beater roll and back fall, an adjustable deflector plate located at the discharge side of the roll and in spaced rela tion above the backfall and permitting the flow of the pulp stream therebetween, but intercepting pulp material discharged by centrifugal influence in a trajectory above the level of the pulp stream said deflector plate being adjustable toward and from the back fall in a direction substantially tangential to a circle concentric with the axis of the roll, and a receiving compartment located forwardly of the beater roll into which the lighter portions of pulp will be discharged by centrifugal influence from the roll, said compartment having an outlet discharging beyond the beater engine.

2. The combination with abeater engine including a beater roll and backfall, of a deflector plate located in spaced relation above the backfall and adjustable relative thereto to vary the intermediate space while maintaining substantially uniform spaced relation with the beater roll, and a receiver for pulp located forwardly of the roll and in proximate relation with the top of the periphery thereof.

3. The combination with a beater engine, including a heater roll, and a backfall over which the pulp stream flows under influence of the roll, of a downwardly and rearwardly inclined deflector plate for intercepting pulp material discharged by centrifugal influence from said roll aboie the level of the pulp stream, and a receiver located at the forward side of the roll into which the intercept material is discharged.

4. The combination with a heater engine, including a beater roll and a backfall, of an adjustable deflector plate located in spaced relation above the backfall said deflector plate being mounted for reciprocatory. motion in a plane inclined downwardly and away from the beater roll and toward the backfall and a receiver for fined pulp located at the opposite side of the roll.

5. The combination with a beater engine, including a beater roll, and a backfall, of a deflector plate adjustable toward and from the back fall to vary the intermediate space through which pulp is discharged by the roll without materially varying the throat space intermediate the deflector plate and roll through which material is carried by the roll for discharge over the top thereof and a receiver located at the opposite side of the roll onto which fined material carried beyond said aforementioned discharge space is discharged.

6. The combination with a beater engine, including a beater roll, and a backfall, of an adjustable deflector plate variably positioned above the backfall and in constant spaced relation with the roll, and distantly operated means for adjusting the deflector plate toward and from thebackfall.

7 The combination with a heater engine, including a roll and a backfall, of a deflector plate adjustably positioned above the backfall, rack bars carried by the plate, gear pinions engaged by the rack bars, a worm and gear actuating means for the gear pinions, and an operating shaft for the worm and ear connection extending into proximity with the endof the beater engine.

8. The combination with a beater engine, including a roll and backfall, of a reciprocatory deflector plate located above the backfall and intercepting the material discharged by centrifugal influence from the roll in a trajectory above the level of the pulp stream, and adjusting means for the deflector plate located beyond the side of the roll opposite the said deflector plate and operatively connected therewith.

9. The combination with a beater engine, including a roll and a backfall, of downwardly and rearwardly inclined adjustable deflector plate located above the backfall and separating the material discharged from the roll through a trajectory above the level of the normal pulp stream, whereby a portion of such material is permitted to return to the pulp stream, and the remainder diverted therefrom, a revoluble adjusting shaft for said deflector plate extending past the roll and therebeyond, and an operative connection between said shaft and the deflector plate for reciprocating the latter in its downwardly and rearwardly. inclined plane.

10. The combination with a heater engine, including a roll and a backfall over which a portion of the pulp is discharged in a flowing stream, while lighter portions of the pulp are discharged by centrifugal influence from the periphery of the roll in a reverse direction, of a reciprocatory deflector plate inclined downwardly and away from the roll above the backfall, toward and from which it is slidingly adjustable, a housing through which the plate projects, and yielding packing means supported upon the housing and engaging the reciprocatory deflector plate.

11. The combination with a beater eli'gine including a roll and a backfall over which a portion of the pulp is discharged in a flowing stream, while lighter portions of the pulp are discharged by centrifugal influence from the periphery of the roll in a reverse direction of a reciprocatory deflector plate inclined downwardly and away from the roll above the backfall, toward' and from which it is slidingly adjustable, and operating means for raising and lowering the de fiector plate relative to the backfall Without changing the spaced relation of the deflector plate-to the roll.

In testimony whereof, I have hereunto set my hand this 21st day of July A. D. 1928.

WILLIAM V. KNOLL. 

